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Ответ

Автор - gionak07

Ответ:

1) 1/3; 2) 2; 3) 4; 4) 2/7

Пошаговое объяснение:

1) 3/8 х 4/5 = 12/40 = 3/10

  3/10 : 9/10 = 3 х 10 : 10 х 9 = 1/3

2)  6/7 : 3/5 = 6 х 5 : 7 х 3 = 10/7

    10/7 х 1 2/5 = 10 х 7 : 7 х 5 = 2

3) 2 2/11 х 1 3/8 = 24 х 11 : 11 х 8 = 3

   3 : 3/4 = 3 х 4 : 3 = 4

4) 11/23 х 3 2/7 = 11 х 23 : 23 х 7 = 11/7

   11/7 : 5 1/2 = 11/7 : 11/2 = 11 х 2 : 7 х 11 = 2/7

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